Another caution comes to mind where alot of the exits off the BRP may not be ideal pulling a RV trailer. SOme have sharp loop backs and curves just before you get on the parkway. You really should plan the exits out if you want to jump off the parkway and spend the night at a close by camp ground. the major roads that cross the parkway should have good exits.
Another cauion is gasoline up on the parkway. There is usally a camp gorund about every 50 miles down the parkway but all do not have the way station setup that has gasoline. It would not be a good idea to run out of gasoline on the parkway as there is no where to call for help haha... The bears will eat you haha... I suspect there may be only three or four way stations along the whole 450mile trek from VA to NC. There are also several tunnels with some you will definitely have to go thru them in the center of the road. Something else to check out before getting stuck out in the middle of nowhere... There are also alot of deer running across the roads in the early evening. Thank goodness for the low speed only being allowed.
All of this info is available from the NPS site showing each mile marker along the whole trip.
I have done the whole parkway three times now over the years but the first two trips was tent camping which was REALLY GREAT and the last trip was pulling my OFF-ROAD POPUP.. Didn't see many travel trailers being towed along the way.
One must plan ahead to be successful
Roy Ken